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首页> 外文期刊>Heat Transfer Engineering >Simultaneous Measurement of Three-Dimensional Temperature Distributions and Radiative Properties Based on Radiation Image Processing Technology in a Gas-Fired Pilot Tubular Furnace
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Simultaneous Measurement of Three-Dimensional Temperature Distributions and Radiative Properties Based on Radiation Image Processing Technology in a Gas-Fired Pilot Tubular Furnace

机译：基于辐射图像处理技术的燃气先导管式炉同时测量三维温度分布和辐射特性

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摘要

An on-line three-dimensional temperature measurement experiment was carried out in a gas-fired pilot tubular furnace. Four flame image detectors were utilized to obtain two (red and green) monochromatic radiation intensity distributions, which can be calculated by the DRESOR method based on the radiation image processing technology. Then a revised Tikhonov regularization method was developed to reconstruct three-dimensional temperature distributions from the green monochromatic radiative intensity. Meanwhile, a Newton method combined with a least-squares method was used to simultaneously reconstruct radiative properties from the red one. The two calculation procedures were performed alternately, forming an iterative algorithm to a simultaneous reconstruction of temperature and radiative properties. The reconstructed temperatures agreed well with those measured by thermocouples for different cases with different calorific values and components of gas. The largest relative error was less than 3%, which validated the effectiveness and accuracy of this reconstruction algorithm. Moreover, the nonuniform radiative properties for the flame and nonflame regions were determined to improve the accuracy of temperature measurement by a rigorous comparison test. Finally a set of reasonable fixed radiative properties for the media and walls was chosen for the on-line detection of temperature. The visualized temperatures obtained by the present method agreed reasonably with those measured by thermocouples for all cases, with the largest relative error less than 5%. The present method based on radiation image processing technology is reliable for on-line temperature measurement and shows a good accuracy for its application in the combustion industry.
机译：在燃气中试管状炉中进行了在线三维温度测量实验。利用四个火焰图像检测器获得两个（红色和绿色）单色辐射强度分布，可以通过基于辐射图像处理技术的DRESOR方法计算得出这些分布。然后，开发了一种修正的Tikhonov正则化方法，以根据绿色单色辐射强度重建三维温度分布。同时，采用牛顿法与最小二乘法相结合的方法，同时从红色中重建了辐射性质。两种计算程序交替执行，形成了一种迭代算法，可以同时重建温度和辐射特性。对于不同热值和气体成分的不同情况，重建温度与热电偶测得的温度吻合得很好。最大相对误差小于3％，这证明了该重建算法的有效性和准确性。此外，通过严格的对比测试确定了火焰和非火焰区域的不均匀辐射特性，以提高温度测量的准确性。最后，选择了一组用于介质和壁的合理的固定辐射特性，以进行温度的在线检测。对于所有情况，通过本方法获得的可视化温度与热电偶测得的温度合理地吻合，最大相对误差小于5％。基于辐射图像处理技术的本方法对于在线温度测量是可靠的，并且在燃烧工业中的应用显示出良好的准确性。

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  • 来源
    《Heat Transfer Engineering》 |2014年第8期|770-779|共10页
  • 作者

    QIANG CHENG; XIANGYU ZHANG; ZHICHAO WANG; HUAICHUN ZHOU; SONG SHAO;

  • 作者单位

    State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China;

    State Key Laboratory of Control & Simulation of Power System & Generation Equipment, Department of Thermal Engineering, Tsinghua University, Beijing, China;

    State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, China;

    State Key Laboratory of Control & Simulation of Power System & Generation Equipment, Department of Thermal Engineering, Tsinghua University, Beijing, China;

    Luoyang Ruichang Petrochemical Equipment Co. Ltd., Luoyang, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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